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What is secret/symmetric cryptography?

Digital Certificate Registration Center
Secret key (symmetric/conventional) cryptography is a system based on the sender and receiver of a message knowing and using the same secret key to encrypt and decrypt their messages. One weakness of this system is that the sender and receiver must trust some communications channel to transmit the secret key to prevent from disclosure. Example: You use a strongbox to send a valuable gift to your friend, locking it with a key. No one can get to the gift without the key, including your friend.
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What is symmetric cryptography?

The National Committee for Voting Integrity (NCVI)
Encryption uses a mathematical key to provide secrecy. Symmetric cryptography refers to encryption systems that use the same key to encrypt and decrypt. A longer explanation can be found here: There are many books that explain these concepts in more detail. We recommend Chapter XX of Secrets & Lies: Digital Security in a Networked World, by Bruce Schneier.
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c) What is secret key cryptography?

Digital Signature India
Secret-key cryptography is sometimes referred to as symmetric cryptography. It is the more traditional form of cryptography, in which a single key can be used to encrypt and decrypt a message. Secret-key cryptography not only deals with encryption, but it also deals with authentication.
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Public key vs. secret key: which cryptography system is better?

Digital Certificate Registration Center
A combination of both. The action of encrypting information with public-key cryptography is significantly slower than encrypting with a secret key. However the drawback of the secret-key system is that, secret keys must be transmitted either manually or through a communication channel, and there may be a chance that others can discover the secret keys during transmission. This is not a problem with public-key cryptography, as private keys never need to be transmitted or revealed to anyone.
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What is Cryptography?

Able Encryption Software. Safe Soft Corporation. Frequently ...
Cryptography is the art and science of keeping files and messages secure. It works by mathematically transforming plaintext messages or files into a ciphertext, a process known as encryption.
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Digital Certificate Registration Center
Cryptography is the science of enabling secure communications between a sender and one or more recipients. This is achieved by the sender scrambling a message (with a computer program and a secret key) and leaving the recipient to unscramble the message (with the same computer program and a key, which may or may not be the same as the sender's key). The emphasis of cryptography is on data confidentiality, data integrity, sender authentication, and non-repudiation of origin/data accountability.
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The National Committee for Voting Integrity (NCVI)
Cryptography is the science of mathematical security. On modern computers, cryptography includes encryption, authentication, and integrity. A good introduction to the concepts can be found here:
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DCSSI FAQ
Cryptography is a science intended to convert unencrypted information or signals into information or signals using secret conventions called keys, such that the information or signals are unintelligible to third parties who are not aware of the secret used to convert the signals, or to perform the reverse operation using hardware or software means designed for this purpose.
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Digital Identity
Cryptography is the science of disguising information through encryption (scrambling) and restoring it to its original form through decryption. It provides similar, but much stronger, security assurances that signatures, paper envelopes and codebooks have always provided.
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Where can I learn more about cryptography?

DESCHALL Project Frequently Asked Questions
There are a few good resources available that should be able to help you better understand cryptography, regardless of your level of experience. Some of these can get quite technical, so if you're looking for a quicker introduction to some of the concepts and such, you'll probably want to grab the Snake Oil FAQ which was written to be understandable by an IS-type person without lots of background in mathematics or information security.
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What is Symmetric NAT? Is my firewall Symmetric?

Frequent questions about VOIP NAT Traversal and Media Path O...
You can find classification of NAT in RFC 3489 – STUN http://www.faqs.org/rfcs/rfc3489.html. It should not mater what type of firewall you have.
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What is encryption and cryptography?

JARING E-MALL
Encryption is the transformation of data into a form (a cipher) that is, for most intents and purposes, impossible to read with out the appropriate decoder (a cryptographic key). Its purpose is to ensure privacy by keeping information hidden from anyone for whom it is not intended, even those who have access to the encrypted data. Decryption is the reverse of encryption; it is the transformation of encrypted data back into an intelligible form.
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China Construction Bank (Macau)
Encryption/Cryptography creates a secure environment for the information being transferred between your browser and China Construction Bank (Macau). Put simply, secure data such as your customer ID and Password are scrambled in our encryption/cryptography process to avoid disclosing your information by unauthorized persons.
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What's the secret?

The Appetizer Diet -- Unique, Delicious and Easy!
There's no secret, just solid science. The Appetizer Diet taps into the latest research on the weight management benefits of soy, soy protein and fiber. It takes advantage of consumer research, too: people are tired of elaborate, overly complicated diets. They want a simple, convenient answer to their needs. That's what the Appetizer Diet delivers.
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www.johngile.com-copyright 2007 by jgc/united publishing
I can offer some suggestions to make getting ideas easier for you, but they're not really "secrets." Sometimes I call them "tricks of the trade," but there's really nothing tricky about them, either. They are simple techniques anyone can use. Here are three. I tell writers at my workshops that almost all my ideas come from my heart. I think about the things I love, the things I love to do, and the people I love. Writing from the heart gives my writing energy.
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Why would you want to me to know your secret formula if it is secret ?

How to blast your allergies away ebook
Frequently Asked...
To those who do not read my book, it will still be a secret. I genuinely want to help people get rid of their allergies.
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Will all the similarity matrices be symmetric, in that the target and query sets are the same?

NIST Iris Challenge Evaluation FAQ
No, the target and query sets will not be the same and therefore the similarity matrices will not be symmetric.
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What Is Symmetric DSL (SDSL)?

DSL Frequently Asked Questions (FAQs)
Symmetric DSL provides a transmission flow in which both downstream and upstream directions have the same speed. This type of DSL Internet access is appropriate for users that need to simultaneously transfer voice signals and data both to and from their computer.
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What is Symmetric (or Single Key) Encryption?

PKI - CCRA Electronic Commerce Security FAQ
Symmetric encryption uses a single piece of information (called a key) to perform the encryption-decryption processes. The sender would take the key (which is known by both parties) and encrypt the data by some process (this process is called the algorithm). The receiver, knowing the key and the algorithm, would take the message, reverse the process using the same key, and would get the original message.
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What is symmetric key encryption?

The National Committee for Voting Integrity (NCVI)
The oldest form of cryptography, dating back at least 2000 years, uses the same key for encryption and decryption. With symmetric key encryption, the sender and receiver of the message must each keep the same key or password as a secret in order to guarantee their privacy when they exchange encrypted messages.
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Can Miredo serve behind a symmetric NAT?

Miredo : Question & answers
Currently, Miredo cannot serve as a Teredo client behind a symmetric NAT. However, in preparation for this to eventually become possible, Miredo can accept other clients behind a symmetric NAT (as of version 0.9.8). It's a matter of time before Miredo supports symmetric NATs to a larger extent (however in any case, support for symmetric NATs will never be equal to support for other NATs due to limitations of symmetric NATs).
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What's the secret to a great relationship?

Personality Type Welcome - book headquarters for Do What You...
Depends upon your type! What one person considers essential to happiness and satisfaction, another person might not consider important at all. Personality type helps you understand and communicate with your partner in more effective and satisfying ways. The elements of a good relationship all 16 types agree upon are: Trying to change your partner only creates more tension and unhappiness.
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Is your secret formula really safe ? Can I take it often ?

How to blast your allergies away ebook
Frequently Asked...
Yes, it is very safe. There are no side effects. The recommended dosage is three to four times a day, or whenever your hay fever/ cold, flu acts up. However, as with most other herbs, it is not for pregnant women, or for infants and children under two.
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What is your secret to being creative?

Spungifeel Comics FAQ
Answer: It's a secret. If I tell you, it won't be a secret anymore, and then everyone and their mother will be as creative as I am and better. Then I'll have to do something else (like collect stamps or something else that makes no money) because things will be far too competitive. But I'll tell you this: it involves the patience to stare at blank sheets of paper longer than most people could ever muster.
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What are Secret Shoppers?

Marcus Peterson - EzineArticles.com Expert Author
Shopping-and-Product-Reviews] The term "secret shopper" is a euphemism for a spy in a commercial setting. This term refers to people who are planted in shops, restaurant, banks and other businesses to evaluate the performance of the staff of that particular business. These secret shoppers give reports based on their experience as customers. These reports are analyzed by businesses to implement changes that will help enhance a customer's interaction with the business.
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My secret code is not working. What is the problem?

Frequently Asked Questions
There can be several reasons for this. Your baby's information may not have been updated on our website yet (click here), or it has been more than 6 months since your baby's web page has been posted (click here), or there may be a problem with our web server. Please try again, and make sure you have entered your code correctly. If the problem persists, click here for more help.
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